Correct answer: Option D - 1,2 and 3.

1. Hindi was identified as the official language.

2. Besides Hindi, there are 21 other languages recognized as scheduled languages.

3. English can be used along with Hindi for official purpose.

- This all three statements can be considered for language policy of Indian federation.

Additional information:

• Hindi; The mother and official language of India would be considered/identified according to policy of Indian federation.
• As Hindi is one of the most spoken language all over the world. Almost every citizen of India knows Hindi. Considering this, Hindi was selected to be official language.
• India is a great country with 1.37 Billion population. Also It is the only country where almost every religion PERSON lives, have great unity and biodiversity.
• As India has vast culture, religions, traditions etc. Then it's obvious that, India will have other languages than Hindi. Hence, Those remaining other 21 Languages were considered as scheduled languages.
• English; 2nd most spoken language in the world. It has demand everywhere. In India too, By considering the demand of English language, English language was used along with Hindi for official purpose languages.

Indian federation: The Indian constitution establishes the federal structure to Indian government. Part-11 from Indian constitution describes/specifies that, distribution of administrative, executive and legislative power between the states of India and Central Government. Federal structure in country describes that, The country is to be of "UNION of states". There are two types of federation: Coming together federation and Holding together federation.

The features of federalism in India are as follows:

i) Functions and powers of each level of government is guaranteed/ approved by constitution of India.

ii) There are two or more levels of Governments. (Levels are also referred as Tiers)

iii) The supreme COURT guaranteed the disputes between two federal governments.

iv) Each tier of government has it's own administration, taxation and power of legislation.

v) Each level of government can govern the same citizens in different MANNERS.

VI) No rule or provisions from the constitution can be altered by any level of government.